1, retention time: five years for nano blue light whitening and two years for cold light whitening.
2. The effect is obvious: Blue light whitening technology has been recognized as the most effective and safest tooth whitening technology in the world. It is more obvious than cold light whitening.
3. In principle:
Nano-blue light whitening: Nano-blue light whitening is a new generation of tooth whitening technology. Nano-blue light whitening technology is to transmit high-intensity blue light with wavelength between 480-520nm through optical brazing, pass through two special optical lenses with more than 30 layers, and then undergo special optical treatment to remove all harmful ultraviolet rays and infrared rays, so that hydrogen peroxide and silicon dioxide with diameter of 20nm can be used as whitening agents to quickly produce redox effect.
Cold light whitening: Cold light tooth whitening technology is to transmit high-intensity blue light with wavelength between 480 and 520 nanometers through optical fiber, pass through two special optical lenses with 30 layers of coating, and then undergo special optical treatment to remove all harmful ultraviolet rays and infrared rays. Quality and success directly affect the quality of life.